CN211300748U

CN211300748U - Shock-proof wheelchair frame

Info

Publication number: CN211300748U
Application number: CN201920655561.3U
Authority: CN
Inventors: 张钊
Original assignee: Dongguan Prestige Sporting Products Co Ltd
Current assignee: Guangdong Qunwang Technology Co ltd
Priority date: 2019-05-08
Filing date: 2019-05-08
Publication date: 2020-08-21
Anticipated expiration: 2029-05-08

Abstract

The utility model discloses a shock-absorbing wheelchair frame, which comprises a front frame, a rear frame, a first support rod, a second support rod, a seat rod, a connecting rod, a first shock absorber, a rear wheel seat and a second shock absorber, wherein the front frame is pivoted with the rear frame, and the middle parts of the first support rod and the second support rod are pivoted with each other; the lower end of the first supporting rod is pivoted with the rear wheel seat, and the upper end of the first supporting rod is pivoted with the front end of the seat rod; the lower end of the second supporting rod is pivoted with the rear end of the front frame; the rear wheel seat is pivoted with the rear end of the rear frame; one end of the second shock absorber is pivoted with the rear wheel seat, and the other end of the second shock absorber is pivoted with the first supporting rod; one end of the connecting rod is pivoted with the front end of the front frame, the other end of the connecting rod is pivoted with the front wheel, one end of the first shock absorber is pivoted with the front frame, and the other end of the first shock absorber is pivoted with the connecting rod. The utility model discloses formula of moving away to avoid possible earthquakes wheelchair frame area function of moving away to avoid possible earthquakes effectively improves the travelling comfort of taking.

Description

Shock-proof wheelchair frame

Technical Field

The utility model relates to a folding chassis especially relates to a formula of moving away to avoid possible earthquakes wheelchair frame.

Background

The existing wheelchair frame generally has a folding function for convenient carrying or storage, so that the structure of the body is relatively more complex than that of a non-folding electric vehicle. However, for the reasons of reducing the weight of the foldable vehicle and improving portability, the foldable electric car generally does not have a shock absorbing function, which severely reduces the riding comfort of the foldable vehicle and cannot meet the user's requirements.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take function of moving away to avoid possible earthquakes improves the formula wheelchair frame of moving away to avoid possible earthquakes of travelling comfort of taking.

In order to achieve the above object, the utility model provides a shock-absorbing wheelchair frame, which comprises a front frame, a rear frame, a first support rod, a second support rod, a seat rod, a connecting rod, a first shock absorber, a rear wheel seat for mounting a rear wheel and a second shock absorber, wherein the front frame is pivoted with the rear frame, the first support rod and the second support rod are arranged in a crossed manner, and the middle parts of the first support rod and the second support rod are pivoted with each other; the lower end of the first supporting rod is pivoted with the rear wheel seat, and the upper end of the first supporting rod is pivoted with the front end of the seat rod; the lower end of the second support rod is pivoted with the rear end of the front frame, and the upper end of the second support rod is movably connected with the seat rod relatively; the rear wheel seat is pivoted with the rear end of the rear frame; one end of the second shock absorber is pivoted with the rear wheel seat, and the other end of the second shock absorber is pivoted with the first supporting rod; one end of the connecting rod is pivoted with the front end of the front frame, the other end of the connecting rod is pivoted with the front wheel, one end of the first shock absorber is pivoted with the front frame, and the other end of the first shock absorber is pivoted with the connecting rod.

Compared with the prior art, the utility model has the advantages that the front frame is pivoted with the rear frame by arranging the front frame, the rear frame, the first support rod and the second support rod are arranged in a crossed manner, the middle parts of the first support rod and the second support rod are pivoted with each other, the lower end of the first support rod is pivoted with the rear wheel seat, and the lower end of the second support rod is pivoted with the front frame, so that the front frame, the rear frame, the first support rod and the second support rod can be mutually closed, and the whole wheelchair frame can be folded; and set up the first shock absorber between preceding frame and the front wheel, set up the second shock absorber between rear wheel seat and the first bracing piece, utilize the shock attenuation effect of first shock absorber and second shock absorber under the prerequisite that does not influence folding up and expanding of whole car for the vibrations that are transmitted to the second bracing piece from preceding frame reduce, and follow the vibrations that rear wheel seat transmitted to first bracing piece reduce, and then make the seat reach the absorbing effect, effectively improve the travelling comfort of taking.

Preferably, the shock-absorbing wheelchair frame further comprises a swing rod, one end of the swing rod is pivoted with the upper end of the second supporting rod, and the other end of the swing rod is pivoted with the rear end of the seat rod. The swing rod is arranged, so that the wheelchair frame can drive the seat to move while the wheelchair body is folded, and the whole wheelchair frame can be folded.

Preferably, the shock-absorbing wheelchair frame further comprises a first auxiliary wheel mechanism, and the first auxiliary wheel mechanism comprises a first support arm extending forwards from the front end of the front frame and a first auxiliary wheel pivoted to the front end of the first support arm. Through setting up first auxiliary wheel mechanism and can provide a reserve support in the place ahead for the wheelchair frame, prevent that the accident from taking place to turn over before when the wheelchair frame expandes the use, guarantee that the wheelchair frame is steady. Preferably, the second shock absorber and/or the first shock absorber are shock springs.

Preferably, the front end of the rear frame is pivotally connected to the middle of the front frame, so that when the front frame is unfolded relative to the rear frame, the rear section of the front frame overlaps the front section of the rear frame.

Specifically, a backrest rod extends out of the upper end of the swing rod. The upper end of the swing rod is provided with the backrest rod, so that the backrest rod can be unfolded along with the wheelchair frame to serve as a backrest for supporting a driver, and can be synchronously folded along with the folding of the wheelchair frame, and the folding convenience is improved.

Preferably, the shock-absorbing wheelchair frame further comprises a second auxiliary wheel mechanism, the second auxiliary wheel mechanism comprises a second support arm, a pull rod and a second auxiliary wheel, one end of the second support arm is pivoted to the rear wheel seat, the other end of the second support arm is provided with the second auxiliary wheel, one end of the pull rod is pivoted to the second support arm, and the other end of the pull rod is pivoted to the rear end of the rear frame. The second auxiliary wheel mechanism can provide a standby support at the rear for the wheelchair frame, prevent the frame from being turned backwards accidentally when the frame is unfolded for use, and ensure the stability of the frame. The pull rod is connected with the rear frame, so that the pull rod can be linked with the folding vehicle, and the second support arm and the second auxiliary wheel are driven to rotate to proper positions simultaneously when the wheelchair frame is folded, so as to realize synchronous folding with the folding vehicle frame.

Specifically, the shock-absorbing wheelchair frame further comprises armrests and an armrest locking mechanism, the armrests are pivoted to the backrest rod, and the armrest locking mechanism is arranged between the armrests and the seat rod to lock and support or unlock the armrests.

Specifically, the armrest locking mechanism comprises a cross rod, a vertical rod and a locking piece, wherein one end of the cross rod is pivoted with the back rest rod, the upper end of the vertical rod is pivoted with the cross rod, and the lower end of the vertical rod is pivoted with the seat rod; the other end of the cross rod is provided with a locking part, one end of the locking part is pivoted with the armrest, the other end of the locking part is provided with a hook body, and the hook body is buckled with the locking part. Thus, a deformable quadrilateral mechanism is formed among the transverse rod, the vertical rod, the back rest rod and the seat rod, so that the seat is foldable and forms a stable support for bearing the handrail when being unfolded. In addition, the locking part and the hook body are arranged, so that the hook body is buckled with the locking part, the handrail and the cross rod are locked, and the handrail and the cross rod are firmly connected when in use.

Specifically, the locking member extends out of an arc-shaped operating handle to facilitate the hook body to be pulled away from the locking portion.

Specifically, the horizontal pole upwards extends out pin joint portion, the upper end pin joint of montant in on the pin joint portion, the handrail bears in the pin joint portion. Through setting up the pin joint portion both can make the horizontal pole with the montant is connected, can play the effect spacing and support the handrail again.

Specifically, a matching position is arranged between the pivoting part and the locking part, an ear part for pivoting the locking piece extends out of the lower side of the armrest, and the ear part is located in the matching position.

Specifically, the armrest locking mechanism further comprises a reset element, wherein the reset element provides an elastic force for buckling the hook body with the locking part.

Specifically, the reset element is a torsion spring disposed between the armrest and the lock.

Drawings

Fig. 1 is a structural view of the shock-absorbing wheelchair frame of the present invention after being unfolded.

Fig. 2 is a structural view of the armrest of the shock-absorbing wheelchair frame of the present invention.

Fig. 3 is an exploded view of the armrest of the shock-absorbing wheelchair frame of the present invention.

FIG. 4 is a diagram showing the movement of the rods of the shock absorbing wheelchair frame of the present invention when folded.

FIG. 5 is a schematic view of the frame of the shock absorbing wheelchair of the present invention after being folded.

Detailed Description

In order to explain technical contents, structural features, and effects achieved by the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

As shown in fig. 1 and 3, the shock-absorbing wheelchair frame 100 of the present invention comprises a front frame 1, a rear frame 2, a first support rod 3, a second support rod 4, a swing rod 5, a seat rod 6, a connecting rod 7, a first shock absorber 8, a rear wheel seat 9 for mounting a rear wheel 102, and a second shock absorber 10; one end of the connecting rod 7 is pivoted with the front end of the front frame 1, the pivoting point is a, and the other end is pivoted with the front wheel 101; one end of the first shock absorber 8 is pivoted with the front frame 1, the pivoting point is b, the other end is pivoted with the connecting rod 7, and the pivoting point is d; the middle part of the front frame 1 is pivoted with the front end of the rear frame 2, and the pivoting point is c, so that when the front frame 1 is unfolded relative to the rear frame 2, the rear section of the front frame 1 is overlapped with the front section of the rear frame 2. The first supporting rod 3 and the second supporting rod 4 are arranged in a crossed manner, the middle parts of the first supporting rod and the second supporting rod are mutually pivoted, and the pivoting point is e; the lower end of the first supporting rod 3 is pivoted with the rear wheel seat 9, the pivoting point is f, the upper end of the first supporting rod is pivoted with the front end of the seat rod 6, and the pivoting point is g; the lower end of the second support rod 4 is pivoted with the rear end of the front frame 1, the pivoting point is h, the upper end of the second support rod is relatively movable with the seat rod 6, specifically, the upper end of the second support rod 4 is pivoted with the lower end of the swing rod 5, the pivoting point is i, the upper end of the swing rod 5 is pivoted with the rear end of the seat rod 6, the pivoting point is j, and the swing rod 5 is arranged to enable the folding bicycle to drive the seat to move while the bicycle body is folded, so that the folding bicycle is integrally folded. Of course, there are many movable connection manners of the first support rod 3, the second support rod 4 and the seat rod 6, for example, a sliding groove may be further disposed on the seat rod 6, a shaft pin is disposed at the upper end of the second support rod 4, and the shaft pin is slidably disposed in the sliding groove, so that the second support rod 4 is movable relative to the seat rod 6, and the same effect can be achieved. The rear wheel seat 9 is pivoted with the rear end of the rear frame 2, and the pivoting point is p; one end of the second shock absorber 10 is pivotally connected to the rear wheel seat 9 at a pivot point k, and the other end is pivotally connected to the first support rod 3 at a pivot point l. The first damper 8 and the second damper 10 are both damper springs.

A backrest rod 51 extends from the upper end of the swing rod 5. By arranging the backrest rod 51 at the upper end of the swing rod 5, the backrest rod 51 can be unfolded along with the folding vehicle to serve as a backrest for supporting a driver, and can be synchronously folded along with the folding vehicle, so that the folding convenience is improved.

The suspension wheelchair frame 100 further includes a first auxiliary wheel mechanism 110, and the first auxiliary wheel mechanism 110 includes a first arm 111 extending forward from the front end of the front frame 1 and a first auxiliary wheel 112 pivoted to the front end of the first arm. The first auxiliary wheel mechanism 110 can provide a standby support in front for the wheelchair frame, prevent the wheelchair frame from accidentally turning forward when being unfolded for use, and ensure the stability of the wheelchair frame.

As shown in fig. 1, the foldable frame 100 further includes a second auxiliary wheel mechanism 120, the second auxiliary wheel mechanism 120 includes a second arm 121, a pull rod 122 and a second auxiliary wheel 123, one end of the second arm 121 is pivoted to the rear wheel seat 9 at a pivot point n, the other end of the second arm is provided with the second auxiliary wheel 123, one end of the pull rod 122 is pivoted to the second arm 121 at a pivot point m, the other end of the pull rod is pivoted to the swing arm at the rear end of the rear frame 2 at a pivot point o. The second auxiliary wheel mechanism 120 can provide a standby support at the rear for the wheelchair frame, prevent the wheelchair frame from being turned backwards accidentally when being unfolded for use, and ensure the stability of the wheelchair frame. The pull rod 122 is connected with the rear frame 2, so that the pull rod 122 can be linked with the wheelchair frame, and the second support arm 121 and the second auxiliary wheel 123 are driven to rotate to proper positions when the wheelchair frame is folded, so as to realize synchronous folding with the wheelchair frame.

The shock-absorbing wheelchair frame 100 further includes an armrest 130 and an armrest locking mechanism 140, wherein the armrest 130 is pivotally connected to the backrest rod 51, and the armrest locking mechanism 140 is disposed between the armrest 130 and the seat rod 6 to lock and support or unlock the armrest 130. Specifically, the armrest locking mechanism 140 includes a cross rod 141, a vertical rod 142, a locking member 143, and a return element 144, wherein one end of the cross rod 141 is pivotally connected to the backrest rod 51, an upper end of the vertical rod 142 is pivotally connected to the cross rod 141, and a lower end of the vertical rod 142 is pivotally connected to the seat post 6; this allows the cross bar 141, vertical bars 142, back bar 51 and seat bar 6 to form a deformable quadrilateral mechanism therebetween, thereby allowing them to fold and form a stable support for the arm rest 130 when deployed. The other end of the crossbar 141 is provided with a locking portion 141a, and the locking portion 141a is a pin shaft. One end of the locking member 143 is pivotally connected to the armrest 130, and the other end thereof is provided with a hook 143a, and the hook 143a is engaged with the locking portion 141 a. By providing the locking part 141a and the hook 143a, the hook 143a is engaged with the locking part 141a, so that the armrest 130 is locked with the crossbar 141, and the armrest 130 and the crossbar 141 are firmly connected when in use. The locking member 143 extends with an arc-shaped operating handle 143b to facilitate the hook 143a to be pulled away from the locking part 141 a. The cross bar 141 extends upward to form a pivot 141b, the upper end of the vertical bar 142 is pivoted to the pivot 141b, and the armrest 130 is supported on the pivot 141 b. A matching position 141c is provided between the pivoting portion 141b and the locking portion 141a, an ear portion 130a for pivoting the locking member 143 protrudes from the lower side of the armrest 130, and the ear portion 130a is located in the matching position 141c, so that the armrest 130 and the cross bar 141 can be more compactly and reasonably matched. The reset element 144 provides an elastic force to lock the hook 143a to the locking part 141 a. The reset element 144 is a torsion spring disposed between the armrest 130 and the locking member 143.

With the above and with reference to fig. 1, 2 and 3, the folding principle of the shock absorbing wheelchair frame 100 of the present invention will be described in detail as follows:

before folding, the operating handle 143b is firstly shifted to separate the hook 143a from the pin, at this time, the armrest 130 is in the unlocking state, and then the armrest 130 is turned over, and then the wheelchair frame can be folded.

When folding up, the rear end of the front frame 1 swings upwards around the pivot point a to drive the front end of the rear frame 2 to swing upwards around the pivot point p, the front frame 1 simultaneously drives the lower end of the second support rod 4 to rotate upwards, the upper end of the second support rod 4 rotates downwards, the upper end of the second support rod 4 drives the swing rod 5 to swing, and the swing rod 5 drives the backrest rod 51 to move towards the seat. The cross bar 141 and the vertical bar 142 are closed in the seat direction. Meanwhile, the upper end of the first support rod 3 swings downwards, and under the action of the first support rod 3 and the second support rod 4, the seat rod 6 is drawn close to the rear frame 2. Meanwhile, the rear frame 2 drives the pull rod 122, so that the pull rod 122 drives the second support arm 121, and the second support arm 121 rotates around the pivot point n toward the rear frame 2. Finally, the whole wheelchair frame can be completely folded, and the complete folding is realized.

Compared with the prior art, because the utility model discloses a set up front frame 1, back frame 2, first bracing piece 3 and second bracing piece 4, with front frame 1 and the pin joint of back frame 2, first bracing piece 3 and second bracing piece 4 are alternately set up and the middle part is pin jointed each other, make the lower extreme of first bracing piece 3 and the pin joint of rear wheel seat 9, the lower extreme of second bracing piece 4 and front frame 1 pin joint, thus make can draw close each other between front frame 1, back frame 2, first bracing piece 3 and the second bracing piece 4 and close, realize folding up of whole wheelchair frame; and set up first shock absorber 8 between preceding frame 1 and front wheel 101 the rear wheel seat 9 with set up the shock absorber between first bracing piece 3, utilize the shock attenuation effect of first shock absorber 8 and second shock absorber 10 under the prerequisite that does not influence folding up and expanding of whole car for the vibrations that are transmitted to second bracing piece 4 from preceding frame 1 reduce, and follow the vibrations that rear wheel seat 9 transmitted to first bracing piece 3 reduce, and then make the seat reach the absorbing effect, effectively improve the travelling comfort of taking.

The above disclosure is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereto, and therefore, the scope of the present invention is not limited to the above embodiments.

Claims

1. A shock-absorbing wheelchair frame is characterized in that: the front frame is pivoted with the rear frame, the first support rod and the second support rod are arranged in a crossed manner, and the middle parts of the first support rod and the second support rod are mutually pivoted; the lower end of the first supporting rod is pivoted with the rear wheel seat, and the upper end of the first supporting rod is pivoted with the front end of the seat rod; the lower end of the second support rod is pivoted with the rear end of the front frame, and the upper end of the second support rod is movably connected with the seat rod relatively; the rear wheel seat is pivoted with the rear end of the rear frame; one end of the second shock absorber is pivoted with the rear wheel seat, and the other end of the second shock absorber is pivoted with the first supporting rod; one end of the connecting rod is pivoted with the front end of the front frame, the other end of the connecting rod is pivoted with the front wheel, one end of the first shock absorber is pivoted with the front frame, and the other end of the first shock absorber is pivoted with the connecting rod.

2. A shock-absorbing wheelchair frame as claimed in claim 1, wherein: the shock-absorbing wheelchair frame further comprises a swing rod, one end of the swing rod is pivoted with the upper end of the second supporting rod, and the other end of the swing rod is pivoted with the rear end of the seat rod.

3. A shock-absorbing wheelchair frame as claimed in claim 1, wherein: the shock-absorbing wheelchair frame further comprises a first auxiliary wheel mechanism, and the first auxiliary wheel mechanism comprises a first support arm extending forwards from the front end of the front frame and a first auxiliary wheel pivoted to the front end of the first support arm.

4. A shock-absorbing wheelchair frame as claimed in claim 1, wherein: the second shock absorber and/or the first shock absorber are shock absorbing springs.

5. A shock-absorbing wheelchair frame as claimed in claim 1, wherein: the front end of the rear frame is pivoted with the middle part of the front frame, so that when the front frame is unfolded relative to the rear frame, the rear section of the front frame is overlapped with the front section of the rear frame.

6. A shock-absorbing wheelchair frame as claimed in claim 2, wherein: and a back rest rod extends from the upper end of the oscillating rod.

7. A shock-absorbing wheelchair frame as claimed in claim 1, wherein: the shock-absorbing wheelchair frame further comprises a second auxiliary wheel mechanism, the second auxiliary wheel mechanism comprises a second support arm, a pull rod and a second auxiliary wheel, one end of the second support arm is pivoted to the rear wheel seat, the other end of the second support arm is provided with the second auxiliary wheel, one end of the pull rod is pivoted to the second support arm, and the other end of the pull rod is pivoted to the rear end of the rear frame.

8. A shock-absorbing wheelchair frame as claimed in claim 6, wherein: the shock-absorbing wheelchair frame further comprises armrests and an armrest locking mechanism, the armrests are pivoted to the backrest rod, and the armrest locking mechanism is arranged between the armrests and the seat rod so as to lock and support or unlock the armrests.

9. A shock-absorbing wheelchair frame as claimed in claim 8, wherein: the armrest locking mechanism comprises a cross rod, a vertical rod and a locking piece, one end of the cross rod is pivoted with the back rest rod, the upper end of the vertical rod is pivoted with the cross rod, and the lower end of the vertical rod is pivoted with the seat rod; the other end of the cross rod is provided with a locking part, one end of the locking part is pivoted with the armrest, the other end of the locking part is provided with a hook body, and the hook body is buckled with the locking part.

10. A shock-absorbing wheelchair frame as claimed in claim 9, wherein: the locking piece extends out of an arc-shaped operating handle so as to be convenient for shifting the hook body away from the locking part.

11. A shock-absorbing wheelchair frame as claimed in claim 9, wherein: the transverse rod extends upwards to form a pivoting part, the upper end of the vertical rod is pivoted on the pivoting part, and the handrail is supported on the pivoting part.

12. A shock-absorbing wheelchair frame as claimed in claim 11, wherein: a matching position is arranged between the pivoting part and the locking part, an ear part for the locking piece to be pivoted extends out of the lower side of the armrest, and the ear part is positioned in the matching position.

13. A shock-absorbing wheelchair frame as claimed in claim 9, wherein: the armrest locking mechanism further comprises a reset element, and the reset element provides an elastic force for enabling the hook body to be buckled with the locking part.

14. A shock-absorbing wheelchair frame as claimed in claim 13, wherein: the reset element is a torsion spring arranged between the armrest and the locking piece.